Process for producing a polyethersulfone fiber, polyethersulfone fiber and their use

摘要

A method of producing a polyethersulfone fiber, the method comprising the steps of: discharging an electrically charged solution containing a polyethersulfone and a solvent from a container; andpulling the charged solution by electrical attraction in an electric field generated between the solution and an electrically charged collector having a charge opposite to the solution while at least a portion of the solvent is evaporated to form a polyethersulfone fiber the polyethersulfone is a polyethersulfone whose 0.5 g / dl solution with a N, N-dimethylacetamide solvent at a temperature of about 25 ° C has a reduced viscosity of 0.4 to 0.7 dl / g.